$\begin{cases}8x^{3}y^{3}+27=18y^{2} \\ 4x^{2}y+6x=y^{2} \end{cases}$
y^2 đó bạn iu –  anhvaem11245 25-06-13 08:52 PM
18y^2 hay 18y^3 vậy bạn? –  bigrockerman10121012 23-06-13 10:02 PM

bị xóa vì bị trùng bởi Đức Vỹ 27-10-13 01:49 PM

Câu hỏi này có nội dung hoàn toàn trùng với câu hỏi đã có.

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